// Create table cmd.CommandText = "CREATE TABLE Users (Id INT PRIMARY KEY, Name NVARCHAR(100))"; cmd.ExecuteNonQuery(); // In DbContext OnConfiguring or Startup.cs optionsBuilder.UseSqlServer(@"Server=(localdb)\MSSQLLocalDB;Database=MyAppDb;Integrated Security=true;"); 5. Limitations & Workarounds | Limitation | Workaround | |------------|-------------| | Max 10 GB per database | Use multiple databases or migrate to SQL Server Express / Standard | | No SQL Server Agent | Use Task Scheduler or background service for scheduled jobs | | No TCP/IP (named pipes only) | Cannot connect from another machine; use full Express for remote | | Single user process per MDF | Design for exclusive file access; use connection pooling | | Memory limited to user process | Monitor with sqllocaldb ; restart instance if needed | 6. Debugging & Management Tips View current instances:
sqllocaldb stop MSSQLLocalDB sqllocaldb delete MSSQLLocalDB sqllocaldb create MSSQLLocalDB SQL Server Express LocalDB is the ideal development and testing database for Windows-based .NET applications. It offers the full power of SQL Server without service installation overhead. However, it should never be used in production due to concurrency and resource limitations. sql server express localdb
sqllocaldb info MSSQLLocalDB
// Connect directly to new DB connString = @"Server=(localdb)\MSSQLLocalDB;Database=TestDB;Integrated Security=true;"; conn.ConnectionString = connString; conn.Open(); // Create table cmd